I read a lot of arguments about how slow, ugly, unstable Android OS or iOS. A lot of bs from a lot of subjective and arrogant people. What do you expect from fanboys?
The truth is, both Android OS and iOS or Samsung and Apple for that matter produces quality software and hardware. Both are running a modern OS that has been tested through time and it works as advertised. It just works.
The only big difference essentially is the other is more open and the other is not.
With Apple, the company wants to control everything. They are the one who decides how to use or not use your phone. Apps in App Store are heavily curated in a sense that if they don't like the color or the layout of your UI because they just don't feel it fits their branding then they might not approve your app. This is just one example of how tight Apple is. With Apple you will have this feeling that you just rented your phone from Apple.
On the other hand, Android OS being an open source you can almost do anything with it. You can even install a different app store. If your OEM is no longer supporting updates then you can try to install a custom rom which provides latest OS updates and security patch. This shows how open Android OS is and its potential to grow more with the inputs from community developers. But of course like uncle Ben said (Spiderman), with freedom comes with great responsibility.
So you choose, a system that has a big brother that makes decision for you but provides what you need or a system that provides what you need and offers a lot more but you have to be responsible for your action because no one is going to decide for you and if you make mistake you either fix it or live with it.